make linking of thread-start with explicit scheduling conditional

the wrapper start function that performs scheduling operations is
unreachable if pthread_attr_setinheritsched is never called, so move
it there rather than the pthread_create source file, saving some code
size for static-linked programs.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
index 69352ef2..c2deffb9 100644
--- a/src/internal/pthread_impl.h
+++ b/src/internal/pthread_impl.h
@@ -56,6 +56,14 @@ struct pthread {
 	void **dtv_copy;
 };
 
+struct start_sched_args {
+	void *start_arg;
+	void *(*start_fn)(void *);
+	sigset_t mask;
+	pthread_attr_t *attr;
+	volatile int futex;
+};
+
 enum {
 	DT_EXITED = 0,
 	DT_EXITING,